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#!/bin/sh /etc/rc.common

START=80
USE_PROCD=1

. "$IPKG_INSTROOT/usr/share/libubox/jshn.sh"

register_init() {
	local config="$1"
	local init="$2"
	shift; shift

	if [ -x "$init" ] && "$init" enabled && ! grep -sqE 'USE_PROCD=.' "$init"; then
		logger -t "ucitrack" "Setting up /etc/config/$config reload trigger for non-procd $init"
		procd_add_config_trigger "config.change" "$config" "$init" "$@"
	fi
}

register_trigger() {
	local uci="$1"
	local file="$2"

	local config init exec affects affected
	local prev

	json_set_namespace config prev
	json_init
	json_load_file "${file}" >/dev/null 2>&1
	json_get_var config 'config'
	[ "$config" = "$uci" ] || {
		json_set_namespace "$prev"
		return
	}
	json_get_var init 'init'
	json_get_var exec 'exec'
	json_get_values affects 'affects'
	json_cleanup
	json_set_namespace "$prev"

	if [ -n "$init" ]; then
		register_init "$config" "/etc/init.d/$init" "reload"
	fi

	if [ -n "$exec" ]; then
		case "$exec" in
			/etc/init.d/*)
				set -- $exec
				register_init "$config" "$@"
			;;
			*)
				logger -t "ucitrack" "Setting up non-init /etc/config/$config reload handler: $exec"
				procd_add_config_trigger "config.change" "$config" $exec
			;;
		esac
	fi

	for affected in $affects; do
		logger -t "ucitrack" "Setting up /etc/config/$affected reload dependency on /etc/config/$config"
		procd_add_config_trigger "config.change" "$config" \
			ubus call service event \
			"$(printf '{"type":"config.change","data":{"package":"%s"}}' $affected)"
	done
}

check_trigger() {
	local config="$1"

	local file

	for file in /usr/share/ucitrack/*.json; do
		[ -f "$file" ] || continue
		register_trigger "$config" "$file"
	done
}

service_triggers() {
	for config in /etc/config/*; do
		check_trigger "${config##*/}"
	done
}